--- title: CanvasRenderingContext2D.lineTo() slug: Web/API/CanvasRenderingContext2D/lineTo tags: - API - Canvas - CanvasRenderingContext2D - Referencia - metodo translation_of: Web/API/CanvasRenderingContext2D/lineTo ---
O método CanvasRenderingContext2D.lineTo() da API Canvas 2D conecta o último ponto do sub-caminho (sub-path) para as coordenadas x, y, através de uma linha (mas na realidade não a desenha).
void ctx.lineTo(x, y);
xylineTosto é só um simples trecho de código que usa o método lineTo. Use o {{domxref("CanvasRenderingContext2D.beginPath", "beginPath()")}} para indicar o path onde será desenhada a linha, mova a caneta (pen) com {{domxref("CanvasRenderingContext.moveTo", "moveTo()")}} e use o método {{domxref("CanvasRenderingContext2D.stroke", "stroke()")}} para desenhar a linha.
<canvas id="canvas"></canvas>
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
ctx.beginPath();
ctx.moveTo(50, 50);
ctx.lineTo(100, 100);
ctx.stroke();
Edite o código abaixo e veja as alterações instantâneas no canvas:
<canvas id="canvas" width="400" height="200" class="playable-canvas"></canvas> <div class="playable-buttons"> <input id="edit" type="button" value="Edit" /> <input id="reset" type="button" value="Reset" /> </div> <textarea id="code" class="playable-code"> ctx.beginPath(); ctx.moveTo(50,50); ctx.lineTo(100, 100); ctx.stroke();</textarea>
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var textarea = document.getElementById("code");
var reset = document.getElementById("reset");
var edit = document.getElementById("edit");
var code = textarea.value;
function drawCanvas() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
eval(textarea.value);
}
reset.addEventListener("click", function() {
textarea.value = code;
drawCanvas();
});
edit.addEventListener("click", function() {
textarea.focus();
})
textarea.addEventListener("input", drawCanvas);
window.addEventListener("load", drawCanvas);
{{ EmbedLiveSample('Playable_code', 700, 360) }}
| Especificação | Estado | Comentário |
|---|---|---|
| {{SpecName('HTML WHATWG', "scripting.html#dom-context-2d-lineto", "CanvasRenderingContext2D.lineTo")}} | {{Spec2('HTML WHATWG')}} |
{{CompatibilityTable}}
| Característica | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Suporte básico | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} |
| Característica | Android | Chrome para Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|
| Suporte básico | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} | {{CompatVersionUnknown}} |